Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	5956	881	15%	0.01	1153	589	51%	6.7
10 Kinds of People	10493	2218	21%	0.01	1844	1252	68%	5.3
2048	5989	2842	47%	0.00	2724	2324	85%	2.5
3D Printed Statues	5911	2759	47%	0.00	2620	2347	90%	2.1
3D Printer	499	107	21%	0.00	187	85	45%	7.9
3-Sided Dice	1899	169	9%	0.00	308	115	37%	8.6
4 thought	5944	2003	34%	0.00	1998	1662	83%	3.2
A1 Paper	3888	1156	30%	0.00	1131	890	79%	3.8
Aaah!	20552	9690	47%	0.00	8706	8093	93%	1.6
Abandoned Animal	1238	243	20%	0.03	295	210	71%	5.2
ABC	8247	3799	46%	0.00	3621	3299	91%	1.6
Above Average	4781	1995	42%	0.00	1994	1785	90%	2.0
A+B Problem	5804	598	10%	0.03	832	285	34%	8.1
A Brief Gerrymander	173	37	21%	0.15	37	22	59%	8.2
Abstract Art	224	62	28%	0.00	61	45	74%	6.8
Absurdistan Roads II	499	180	36%	0.00	175	119	68%	6.8
Absurdistan Roads III	1253	340	27%	0.02	326	246	75%	5.6
Access Points	207	90	43%	0.01	76	59	78%	5.9
A Classy Problem	7144	1852	26%	0.01	1583	1222	77%	4.4
ACM Contest Scoring	5089	3206	63%	0.00	2821	2665	94%	1.6
Adding Words	7406	1712	23%	0.00	1706	1294	76%	4.5
A Different List Game	5645	388	7%	0.00	694	138	20%	9.1
A Different Problem	21979	8461	38%	0.00	7837	6794	87%	2.0
Adjoin the Networks	1441	387	27%	0.00	339	264	78%	5.7
Administrative Difficulties	815	194	24%	0.03	217	142	65%	6.6
Advanced Causal Measurements	49	12	24%	0.10	15	12	80%	6.7
Adventure Begins	169	54	32%	0.06	62	46	74%	4.3
Adventures in Moving -- Part IV	749	231	31%	0.00	206	180	87%	4.2
A Favourable Ending	1262	325	26%	0.00	301	222	74%	4.7
A Feast For Cats	1641	560	34%	0.00	377	313	83%	4.5
Air Conditioned Minions	3250	927	29%	0.00	993	746	75%	3.6
Airline Hub	1541	276	18%	0.01	309	170	55%	6.9
Airport Coffee	711	153	22%	0.09	148	111	75%	6.6
Airport Construction	2822	378	13%	0.02	306	161	53%	7.4
Airport Logistics	48	11	23%	0.00	17	11	65%	7.6
Airports	293	90	31%	0.11	85	65	76%	5.9
Akcija	5000	2191	44%	0.00	1957	1730	88%	2.0
Aladin	733	68	9%	0.10	113	21	19%	9.0
Alchemy	95	15	16%	0.03	27	15	56%	8.0
Alea iacta est	29	11	38%	0.34	14	11	79%	6.9
Alice in the Digital World	2123	590	28%	0.01	590	462	78%	4.1
Alien Codebreaking	54	6	11%	3.23	16	4	25%	8.8
Alien Numbers	1766	909	51%	0.00	882	801	91%	2.0
A List Game	6133	1834	30%	0.00	1763	1481	84%	2.9
All about that base	2488	978	39%	0.00	943	790	84%	3.1
All Different Directions	912	396	43%	0.00	362	315	87%	2.6
Allergy Test	341	108	32%	0.00	110	58	53%	7.9
All Friends	785	152	19%	0.00	138	71	51%	8.5
All Just A Dream	1549	362	23%	0.05	244	172	70%	6.6
All Pairs Shortest Path	6886	1221	18%	0.02	822	567	69%	6.1
Almost Perfect	5205	1215	23%	0.00	1290	1017	79%	3.4
Almost Union-Find	5189	912	18%	0.02	810	458	57%	6.8
Alphabet	956	471	49%	0.00	479	404	84%	3.1
Alphabet Spam	5549	3576	64%	0.00	2798	2694	96%	1.4
Alternative Bracket Notation	193	81	42%	0.00	85	71	84%	4.9
Altruistic Amphibians	318	75	24%	0.24	77	54	70%	5.1
Amalgamated Artichokes	3285	1484	45%	0.01	1330	1158	87%	2.7
Amanda Lounges	1244	343	28%	0.03	313	245	78%	5.5
A Mazing!	1679	401	24%	0.09	189	141	75%	5.0
Amazing Adventures	149	39	26%	0.03	46	29	63%	7.0
Amazing Race	259	68	26%	0.39	76	55	72%	6.6
Ambiguous Result	204	48	24%	0.03	72	46	64%	7.8
Amsterdam Distance	982	406	41%	0.00	455	368	81%	2.8
A Multiplication Game	467	138	30%	0.00	158	119	75%	4.3
Anagram Counting	2678	1033	39%	0.00	981	814	83%	3.1
Andrew the Ant	220	59	27%	0.06	74	55	74%	5.4
A New Alphabet	8573	3899	45%	0.00	3645	3378	93%	1.7
An I for an Eye	247	67	27%	0.00	77	57	74%	5.5
Animal Classification	1372	295	22%	0.03	276	178	64%	6.6
An Industrial Spy	1306	675	52%	0.02	528	451	85%	3.2
Another Brick in the Wall	2294	1096	48%	0.00	1063	968	91%	1.9
Another Candies	6224	1650	27%	0.00	1748	1421	81%	3.3
Another Dice Game	83	60	72%	0.00	53	49	92%	3.4
Another Query on Array Problem	1143	149	13%	0.05	254	105	41%	7.8
Antenna Placement	28	17	61%	0.00	8	7	88%	6.2
Anthony and Cora	663	172	26%	0.00	209	143	68%	5.5
Anthony and Diablo	1776	627	35%	0.00	690	594	86%	2.5
Antiarithmetic?	1008	183	18%	0.01	245	133	54%	7.4
Ants	2685	1215	45%	0.00	939	834	89%	2.4
Apaxiaaaaaaaaaaaans!	9225	5607	61%	0.00	5090	4869	96%	1.4
Apostrophe Catastrophe	61	15	25%	0.00	14	9	64%	6.5
Appalling Architecture	168	54	32%	0.00	61	52	85%	4.8
Apparatus	638	162	25%	0.01	124	95	77%	5.1
Apple Market	445	89	20%	0.07	104	55	53%	7.7
Apples, Cherries, and Mangos	364	114	31%	0.02	107	82	77%	5.6
A Prize No One Can Win	537	235	44%	0.00	197	173	88%	2.5
Aquarium Tank	438	119	27%	0.00	113	88	78%	5.4
Aqueduct Construction	143	51	36%	0.01	42	36	86%	6.1
A Question of Ingestion	1093	266	24%	0.00	246	185	75%	5.7
Arable Area	233	54	23%	0.04	56	34	61%	8.1
Arachnophobia	245	74	30%	0.14	69	56	81%	4.9
A Random Problem	127	25	20%	0.00	31	20	65%	8.0
A Rational Sequence	1332	445	33%	0.00	479	346	72%	5.0
A Rational Sequence 2	1704	1257	74%	0.00	1109	1065	96%	1.5
A Rational Sequence (Take 3)	659	561	85%	0.00	435	425	98%	1.7
Arbitrage?	1742	355	20%	0.02	261	211	81%	3.6
Arcade!	1122	202	18%	0.01	195	138	71%	6.3
Arctic Network	1283	447	35%	0.00	390	311	80%	4.4
A Real Challenge	6089	2943	48%	0.00	2837	2660	94%	1.5
Area of Effect	153	10	7%	1.93	22	8	36%	8.5